EP1862605A2 - Enceinte thermo-acoustique - Google Patents
Enceinte thermo-acoustique Download PDFInfo
- Publication number
- EP1862605A2 EP1862605A2 EP07108989A EP07108989A EP1862605A2 EP 1862605 A2 EP1862605 A2 EP 1862605A2 EP 07108989 A EP07108989 A EP 07108989A EP 07108989 A EP07108989 A EP 07108989A EP 1862605 A2 EP1862605 A2 EP 1862605A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- panel
- enclosure
- wall
- inner panel
- stiffening members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 239000007769 metal material Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 8
- 238000013016 damping Methods 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 239000000835 fiber Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000006261 foam material Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012814 acoustic material Substances 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8218—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only soundproof enclosures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G13/00—Other offensive or defensive arrangements on vessels; Vessels characterised thereby
- B63G13/02—Camouflage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/16—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to gas turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
Definitions
- This invention relates generally to enclosures for apparatus that, during operation, generates heat and sound energy. More particularly, it relates to an enclosure for a turbine engine used for such applications as marine or industrial.
- Gas turbine engines used to generate power in marine or industrial applications are required to be contained or packaged in an enclosure to reduce levels of noise or sound energy and heat generated during engine operation, as well as to provide fire protection.
- existing designs of such enclosures include heavy metal structures based on the theory that mass is the primary factor in sound attenuation and therefore increased mass results in increased sound attenuation or transmission loss.
- the walls of current enclosures include heavy, solid and porous metal plates with a large number of stiffening beams to achieve a desired sound frequency attenuation. Damping compound is added to provide damping of acoustic energy and reduce heat transmission. The result is a relatively heavy acoustic enclosure.
- a method for assembling a gas turbine engine assembly includes coupling a first wall, a second wall, a third wall, and a fourth wall together to form an enclosure, at least one of the first, second, third, or fourth walls including a first panel including an inner layer, an outer layer, and a plurality of spaced-apart transverse walls between the inner and outer layers, and a second panel that includes at least an outer layer and a first acoustic material, the first panel coupled to the second panel such that the outer surface of the first panel is flush against the outer surface of the second panel, and positioning a gas turbine engine within the enclosure such that at least a portion of the gas turbine engine is contained within the enclosure.
- an enclosure for an apparatus having at least one wall defining at least a portion of an enclosure hollow interior includes an inner panel comprising, in sequence outwardly from the enclosure hollow interior, an inner sheet comprising a plurality of perforations extending therethrough, a plurality of panel stiffening members coupled to the inner sheet, and at least one inner panel sound absorption member comprising non-metallic sound absorption material positioned between adjacent of the plurality of panel stiffening members, and an outer panel comprising in sequence inwardly from outside of the enclosure, an outer panel sandwich member comprising non-metallic composite material including spaced-apart first and second walls and a plurality of spaced-apart transverse walls extending between the first and second walls defining hollow chambers therebetween, the outer panel coupled to the inner panel such that an outer surface of the inner panel is substantially flush against an outer surface of the outer panel.
- a gas turbine engine assembly in a further aspect, includes an enclosure including a first wall, a second wall, a third wall, and a fourth wall.
- Each wall includes an inner panel comprising, in sequence outwardly from the enclosure hollow interior, an inner sheet comprising a plurality of perforations extending therethrough, a plurality of panel stiffening members coupled to the inner sheet, and at least one inner panel sound absorption member comprising non-metallic sound absorption material positioned between adjacent of the plurality of panel stiffening members, and an outer panel comprising in sequence inwardly from outside of the enclosure, an outer panel sandwich member comprising non-metallic composite material including spaced-apart first and second walls and a plurality of spaced-apart transverse walls extending between the first and second walls defining hollow chambers therebetween, the outer panel coupled to the inner panel such that an outer surface of the inner panel is substantially flush against an outer surface of the outer panel, and a gas turbine engine positioned within the enclosure.
- Wall 2 includes, in sequence from outside 3 of enclosure wall 2, a heavy metal plate 4, a sprayed-on thick rubber coating material 5, felt batting material 6 (typically including a thin film facing 7) to provide damping of acoustic energy, and a perforated metal face sheet 8 (including pores 9 therethrough) adjacent enclosure inside or enclosure hollow interior 10.
- Supporting such prior art structure is a large number of heavy metal stiffening beams (not shown).
- Such current design results in a relatively heavy structure for an enclosure in order to satisfy specified sound energy attenuation requirements.
- Various embodiments of the present invention eliminate heavy metal walls and supports by including wall components that are fabricated utilizing primarily non-metallic composite materials, including fiber reinforced composites, to provide high damping and stiffness characteristics to the wall.
- a lighter weight support frame can be used to provide a structurally strong, yet lightweight, enclosure that includes enhanced acoustic characteristics and reduced heat transfer through enclosure walls, along with fire protection and in-plane shear loading capabilities.
- FIG. 2 is a schematic illustration of an exemplary gas turbine engine 11 including an inlet portion 12, an engine portion 14, and an exhaust portion 16.
- Engine portion 14 includes at least one compressor 18, a combustor 20, a high pressure turbine 22, and a low pressure turbine 24 connected serially.
- Inlet portion 12 includes an inlet 26, and exhaust portion 16 includes an exhaust nozzle 28.
- engine 11 is an LM2500 engine commercially available from General Electric Company, Cincinnati, Ohio.
- Compressor 18 and turbine 22 are coupled by a first shaft 30, and turbine 24 and a driven load 32 are coupled by a second shaft 34.
- FIG. 3 is a perspective view of an exemplary module assembly 36.
- module assembly 36 may be used to enclose any gas turbine engine, in the exemplary embodiment module assembly 36 is used to enclose gas turbine engine 11.
- module assembly 36 includes a first wall 40, a second wall 42 that is coupled to first wall 40, a third wall 44 that is coupled to second wall 42, and a fourth wall 46 that is coupled to third wall 44 and first wall 40 such that module assembly 36 defines an approximately rectangular enclosure that is suitably sized to enclose engine assembly 11. More specifically, first wall 40 is substantially parallel to third wall 44 and also substantially perpendicular to second and fourth walls 42 and 46, respectively and second wall 42 is substantially parallel to fourth wall 46 and substantially perpendicular to first and third walls 40 and 44, respectively.
- module assembly 36 also includes a ceiling 48 and a floor 50 that are each coupled to an upper or lower surface of first, second, third, and fourth walls 40, 42, 44, and 46, respectively such that engine assembly 11 is completely enclosed within module assembly 36.
- FIGmatic, perspective, fragmentary, partially sectional view of Figure 4 and the diagrammatic, fragmentary, partially sectional plan view of Figure 5 along lines 5 - 5 of Figure 4 represents an enclosure wall, shown generally as wall 40 according to an embodiment of the present invention. Although the invention is described with respect to wall 40, it should be realized that walls 42, 44, 46, ceiling 48 or floor 50 may be fabricated using the methods and apparatus described below.
- Wall 40 includes an inner panel shown generally at 60 and an outer panel shown generally at 62.
- Inner panel 60 includes, in sequence outwardly from enclosure hollow interior 10, an inner panel inner sheet 70, typically of a metal such as steel, at hollow interior 10 and including a plurality of perforations 72 therethrough.
- an inner panel sound absorption member 74 substantially made of commercially available non-metallic sound absorption material, for example a polymeric foam or porous material such as is currently made of such materials as polyurethane, rockwool, phenolic, melamine, etc.
- member 74 is shown to include a plurality of layers that can be of the same or different materials as desired for sound attenuation.
- member 74 includes a thin film facing 76, for example of a metallized polymeric material.
- Inner panel 60 further includes an inner panel outer sheet 78 substantially made of a non-metallic material, for example of a fiber reinforced resin matrix.
- inner panel 60 also includes a plurality of panel stiffening members 82 that are coupled between inner panel inner sheet 70 and inner panel outer sheet 78.
- each stiffening member 82 is an I-shaped beam that is fabricated from a relatively light-weight composite or metallic material.
- each stiffening member 82 is made substantially of a non-metallic composite material, for example fiber reinforced, to provide a combination of lightweight and strength to wall 40.
- each stiffening member 82 may form generally a "C" shaped channel about sound absorption member 74, although other shapes such as a "Z" shaped channel can be used.
- inner panel fastening means shown generally at 84, for example shown as typical bolts, studs, nuts, spacers, and pressure plates.
- fastening means can include interface bonding or adhesive type materials.
- Fastening means 84 are provided to hold the inner panel inner sheet 70, sound absorption material 74, and inner panel outer sheet 78 in sequence, and to hold stiffening members 82 within inner panel 60.
- Outer panel 62 includes, in sequence inwardly from outside 3 of enclosure 36, outer panel sandwich member shown generally at 90 substantially made of a non-metallic composite material, preferably fiber reinforced for enhanced stiffness.
- Sandwich member 90 includes spaced-apart sandwich member first and second walls 92 and 94, respectively, and a plurality of spaced-apart transverse walls 96 therebetween that define a plurality of hollow chambers 98 therebetween.
- outer panel 62 also includes a plurality of heat, fire resistant, and/or sound absorption cores 100 that are positioned between inner and outer walls 92 and 94 respectively. More specifically, each core 100 is positioned between spaced apart transverse walls 96 within a respective hollow chamber 98.
- outer panel 62 does not include cores 100.
- each core 100 is fabricated using a commercially available non-metallic material, for example a polymeric foam or porous material such as is currently made of such materials as polyurethane, rockwool, phenolic, melamine, etc.
- inner panel 60 is coupled to outer panel 62 using fasteners 84.
- inner panel 60 is coupled to outer panel 62 such that the outer surface of inner panel sound absorption member 74 is flush against the outer surface of second panel second wall 92. That is the exterior surface of inner panel 60 is in contact with, or flush to, the exterior surface of outer panel 62.
- inner panel outer sheet 78 is inserted between panels 60 and 62 to further increase the structural stiffness of the walls and/or to facilitate decreasing noise transmission through the walls.
- Described herein is a relatively lightweight enclosure wall that integrates three separate optimized structural elements into one unitized structure. Moreover the enclosure wall has improved acoustic and structural capabilities compared to known enclosure walls. For example, during operation, sound radiating from the gas turbine engine first strikes the surface of the inner panel structure that includes a perforated or solid face sheet backed with a multilayer acoustic absorptive sheet. The multilayer acoustic absorptive sheet may also be subdivided by stiffeners into horizontal or vertical chambers. As such, the inner panel provides acoustic absorptive and transmission loss characteristics.
- the enclosure wall also includes an internal skeletal structure that is fabricated utilizing a plurality of beams that acoustically isolate the inner and outer panels, and also provide the primary structural support of the enclosure.
- the inner and outer panels are fastened to the beams with either mechanical isolation fasteners or bonded with sealants or adhesives.
- the outer panel provides acoustic transmission loss characteristics, reduced heat flow, fire protection plus in-plane shear loading capabilities.
- the outer panel is fabricated as a sandwich-like structure that includes a pair of composite facesheets that are separated by a medium such as foam or honeycomb, for example.
- the facesheets are connected by both foam and rib stiffeners.
- the channels between the ribs may be hollow, filled with foam or other sound absorbing media.
- the high damping and stiffness characteristics of the composite material and sandwich construction facilitate providing an efficient lightweight transmission loss structure.
- the wall structure may include a relatively thin metallic plate that is coupled to the outer panel to further increase the transmission loss and also provide fire protection and external damage protection.
- the low transverse thermal conductivity of composites coupled with the sandwich panel facilitate reducing heat flow and also provides relatively low exterior temperatures.
- the enclosure wall described herein facilitates reducing the overall weight of the engine module structure, provides improved acoustic characteristics, and also reduces outside wall temperatures and fire protection compared to known enclosure walls.
- the present invention provides an enclosure with a significantly improved combination of reduced weight and structural stability along with sound loss characteristics and heat and fire resistance through the arrangement and use primarily of non-metallic materials.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/444,659 US7604095B2 (en) | 2006-06-01 | 2006-06-01 | Thermal-acoustic enclosure |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1862605A2 true EP1862605A2 (fr) | 2007-12-05 |
EP1862605A3 EP1862605A3 (fr) | 2012-04-11 |
EP1862605B1 EP1862605B1 (fr) | 2014-03-05 |
Family
ID=38357941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07108989.0A Expired - Fee Related EP1862605B1 (fr) | 2006-06-01 | 2007-05-25 | Enceinte thermo-acoustique |
Country Status (4)
Country | Link |
---|---|
US (1) | US7604095B2 (fr) |
EP (1) | EP1862605B1 (fr) |
JP (1) | JP5237583B2 (fr) |
CA (1) | CA2590081C (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2821621A1 (fr) * | 2013-07-03 | 2015-01-07 | Pratt & Whitney Canada Corp. | Structure acoustique pour un moteur à turbine à gaz |
ITUB20160493A1 (it) * | 2016-01-29 | 2017-07-29 | Nuovo Pignone Tecnologie Srl | Pannello multistrato per installazioni di macchinari |
Families Citing this family (27)
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US7604095B2 (en) * | 2006-06-01 | 2009-10-20 | General Electric Company | Thermal-acoustic enclosure |
FR2906637B1 (fr) * | 2006-09-29 | 2009-01-09 | Faurecia Automotive Ind Snc | Composant d'insonorisation pour organe structurel rigide d'automobile. |
DE102008037143A1 (de) * | 2008-08-08 | 2010-02-11 | Airbus Deutschland Gmbh | Isolationsaufbau zum thermischen und akustischen Isolieren eines Luftfahrzeugs |
US20100108438A1 (en) * | 2008-11-03 | 2010-05-06 | William Christopher Duffy | Panel for acoustic damping and fire protection applications |
SE533764C2 (sv) * | 2009-05-04 | 2010-12-28 | Bloc Internat Ab Z | Ljudbarriär för dämpning av störande trafikljud |
EP2480753A4 (fr) * | 2009-09-25 | 2017-12-06 | Services Pétroliers Schlumberger | Mécanisme d'atténuation de son multicouche |
US20120125711A1 (en) * | 2010-11-24 | 2012-05-24 | Stahr Richard E | Sound absorbing panel and system |
FR2969702B1 (fr) * | 2010-12-23 | 2014-10-10 | Ge Energy Products France Snc | Enceinte pour equipement thermique et procede de montage |
US8944753B2 (en) | 2011-11-09 | 2015-02-03 | Pratt & Whitney Canada Corp. | Strut mounting arrangement for gas turbine exhaust case |
US9200537B2 (en) | 2011-11-09 | 2015-12-01 | Pratt & Whitney Canada Corp. | Gas turbine exhaust case with acoustic panels |
US8826669B2 (en) | 2011-11-09 | 2014-09-09 | Pratt & Whitney Canada Corp. | Gas turbine exhaust case |
US8418807B1 (en) * | 2012-01-17 | 2013-04-16 | Evapco, Inc. | Noise abatement wall and a noise abatement wall system |
US8685302B2 (en) | 2012-02-20 | 2014-04-01 | Honeywell International Inc. | Monolithic acoustically-treated composite structures and methods for fabricating the same |
CN102943840B (zh) * | 2012-11-05 | 2015-03-11 | 中国船舶重工集团公司第七〇五研究所 | 一种用于船舶减振隔音的穿孔约束阻尼结构 |
CN105492726B (zh) * | 2013-09-06 | 2018-03-30 | 通用电气公司 | 包括第一和第二蜂窝层和其间的穿孔中间密封板的燃气涡轮叠层密封组件 |
FR3013076B1 (fr) * | 2013-11-13 | 2017-12-08 | Ge Energy Products France Snc | Structure de protection thermo-acoustique pour machine tournante |
US20160102580A1 (en) * | 2014-10-13 | 2016-04-14 | Pw Power Systems, Inc. | Power turbine inlet duct lip |
USD808125S1 (en) | 2015-10-09 | 2018-01-23 | Milwaukee Electric Tool Corporation | Garment |
USD787160S1 (en) | 2015-10-09 | 2017-05-23 | Milwaukee Electric Tool Corporation | Garment |
EP3775421A4 (fr) * | 2017-04-13 | 2021-12-08 | Colin Rawson | Installation de traitement aéroacoustique de matières avec système d'atténuation du bruit |
US10971127B2 (en) * | 2018-03-20 | 2021-04-06 | General Electric Company | Enclosure for a gas turbine engine |
US11066147B2 (en) * | 2018-07-10 | 2021-07-20 | Rohr, Inc. | Structured panel with integrated skin and sidewalls |
US10876480B2 (en) * | 2019-02-01 | 2020-12-29 | Pratt & Whitney Canada Corp. | Acoustic structure for gas turbine engine |
RU189892U1 (ru) * | 2019-03-25 | 2019-06-07 | Михаил Васильевич Пилягин | Звукоизолирующее крепление |
US11674396B2 (en) | 2021-07-30 | 2023-06-13 | General Electric Company | Cooling air delivery assembly |
US11674405B2 (en) | 2021-08-30 | 2023-06-13 | General Electric Company | Abradable insert with lattice structure |
US11635026B1 (en) * | 2021-12-21 | 2023-04-25 | Rolls-Royce Deutschland Ltd & Co Kg | Fan case assembly for a gas turbine engine |
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EP1657374A2 (fr) * | 2004-11-12 | 2006-05-17 | General Electric Company | Enceinte thermique et acoustique |
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JP2006069321A (ja) * | 2004-09-01 | 2006-03-16 | Sasakura Engineering Co Ltd | 航空機用の防音設備 |
US7909136B2 (en) * | 2004-11-24 | 2011-03-22 | Serious Materials, Inc. | Soundproof assembly |
US7484593B2 (en) * | 2004-12-02 | 2009-02-03 | The Boeing Company | Acoustic structure and method of manufacturing thereof |
US7604095B2 (en) * | 2006-06-01 | 2009-10-20 | General Electric Company | Thermal-acoustic enclosure |
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2006
- 2006-06-01 US US11/444,659 patent/US7604095B2/en active Active
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2007
- 2007-05-24 CA CA2590081A patent/CA2590081C/fr not_active Expired - Fee Related
- 2007-05-25 EP EP07108989.0A patent/EP1862605B1/fr not_active Expired - Fee Related
- 2007-05-31 JP JP2007144313A patent/JP5237583B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1657374A2 (fr) * | 2004-11-12 | 2006-05-17 | General Electric Company | Enceinte thermique et acoustique |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2821621A1 (fr) * | 2013-07-03 | 2015-01-07 | Pratt & Whitney Canada Corp. | Structure acoustique pour un moteur à turbine à gaz |
US9909501B2 (en) | 2013-07-03 | 2018-03-06 | Pratt & Whitney Canada Corp. | Acoustic structure for a gas turbine engine |
ITUB20160493A1 (it) * | 2016-01-29 | 2017-07-29 | Nuovo Pignone Tecnologie Srl | Pannello multistrato per installazioni di macchinari |
WO2017129696A1 (fr) * | 2016-01-29 | 2017-08-03 | Nuovo Pignone Tecnologie Srl | Panneau multicouche pour une enceinte de machines |
CN108602308A (zh) * | 2016-01-29 | 2018-09-28 | 诺沃皮尼奥内技术股份有限公司 | 用于机械外壳的多层板 |
US11473297B2 (en) | 2016-01-29 | 2022-10-18 | Nuovo Pignone Tecnologie Srl | Multilayered panel for machinery enclosure |
Also Published As
Publication number | Publication date |
---|---|
CA2590081A1 (fr) | 2007-12-01 |
CA2590081C (fr) | 2015-03-24 |
US7604095B2 (en) | 2009-10-20 |
EP1862605A3 (fr) | 2012-04-11 |
EP1862605B1 (fr) | 2014-03-05 |
US20070278035A1 (en) | 2007-12-06 |
JP2007321761A (ja) | 2007-12-13 |
JP5237583B2 (ja) | 2013-07-17 |
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